If you believe that yeast infection is something that you only get from direct involvement with somebody who has it, then think again. You will find that there is a variety of reasons that will cause a yeast infection. Wearing restrictive and or damp garments, warm apparel, hygiene and application products such as soap, douche, being a diabetic, being premenstrual, taking oral steroids and using birth control pills, these are all contained in the possibilities. Effective interventions are available to help remove the infection, and changing your diet can also have a significant impact.